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Uranium vs Praseodymium

Uranium
Praseodymium
Praseodymium vs Uranium


Periodic Table
Symbol
U  
Pr  
Group Number
0  
18
3  
15
Period Number
7  
6  
Block
f block  
f block  
Element Family
Actinide  
Lanthanide  
CAS Number
7440611  
28
7440100  
99+
Space Group Name
Cmcm  
P63/mmc  
Space Group Number
63.00  
13
194.00  
7
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.
  
Sources
Earth's crust, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
-  
Discovery
In 1789  
In 1885  
Abundance
  
  
Abundance In Universe
0.00 %  
30
0.00 %  
23
Abundance In Sun
0.00 %  
26
0.00 %  
26
Abundance In Meteorites
0.00 %  
99+
0.00 %  
40
Abundance In Earth's Crust
0.00 %  
36
0.00 %  
27
Abundance In Oceans
0.00 %  
11
0.00 %  
39
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
  • The main use of Praseodymium include alloys. Praseodymium –Magnesium alloy is used in aircraft engines due to its high strength.
  • This metal is also used while making a permanent magnets.
  
Industrial Uses
Ammunition Industry, Chemical Industry  
Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Moderately Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
33
In Bone
1.20 p.p.m.  
19
0.00 p.p.m.  
99+
Physical
Melting Point
1,132.00 °C  
39
935.00 °C  
99+
Boiling Point
3,818.00 °C  
16
3,130.00 °C  
28
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Grayish White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
4.00  
11
Brinell Hardness
2,350.00 MPa  
2
481.00 MPa  
29
Vickers Hardness
1,960.00 MPa  
6
400.00 MPa  
99+
Speed of Sound
3,155.00 m/s  
36
2,280.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.38  
40
1.64  
30
Reflectivity
80.00 %  
7
60.00 %  
23
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
U  
Pr  
Isotopes
  
  
Known Isotopes
25  
14
31  
8
Electronegativity
  
  
Pauling Electronegativity
1.38  
29
1.13  
99+
Sanderson Electronegativity
1.38  
22
1.13  
36
Allred Rochow Electronegativity
1.22  
27
1.07  
33
Mulliken-Jaffe Electronegativity
1.38  
29
1.13  
99+
Allen Electronegativity
1.38  
36
1.13  
99+
Electropositivity
  
  
Pauling Electropositivity
2.62  
26
2.87  
12
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol  
99+
527.00 kJ/mol  
99+
2nd Energy Level
1,420.00 kJ/mol  
99+
1,020.00 kJ/mol  
99+
3rd Energy Level
1,900.00 kJ/mol  
99+
2,086.00 kJ/mol  
99+
4th Energy Level
3,145.00 kJ/mol  
99+
3,761.00 kJ/mol  
99+
5th Energy Level
5,976.00 kJ/mol  
99+
5,551.00 kJ/mol  
99+
6th Energy Level
5,976.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
7th Energy level
5,970.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
8th Energy Level
5,976.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
9th Energy Level
5,976.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
10th Energy Level
5,976.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
11th Energy Level
5,976.00 kJ/mol  
99+
5,274.00 kJ/mol  
99+
12th Energy Level
5,970.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
13th Energy Level
5,970.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
14th Energy Level
5,970.00 kJ/mol  
34
5,270.00 kJ/mol  
99+
15th Energy Level
59,700.00 kJ/mol  
99+
52,700.00 kJ/mol  
99+
16th Energy Level
59,700.00 kJ/mol  
35
52,700.00 kJ/mol  
99+
17th Energy Level
597.60 kJ/mol  
99+
527.30 kJ/mol  
99+
18th Energy Level
5,976.00 kJ/mol  
99+
5,270.00 kJ/mol  
99+
19th Energy Level
597.60 kJ/mol  
99+
527.30 kJ/mol  
99+
20th Energy Level
597.00 kJ/mol  
99+
527.00 kJ/mol  
99+
21st Energy Level
597.60 kJ/mol  
99+
527.00 kJ/mol  
99+
22nd Energy Level
597.00 kJ/mol  
99+
527.00 kJ/mol  
99+
23rd Energy Level
597.60 kJ/mol  
99+
527.00 kJ/mol  
99+
24th Energy Level
597.60 kJ/mol  
99+
527.40 kJ/mol  
99+
25th Energy Level
597.60 kJ/mol  
99+
527.00 kJ/mol  
99+
26th Energy Level
597.60 kJ/mol  
99+
527.40 kJ/mol  
99+
27th Energy Level
597.60 kJ/mol  
99+
527.40 kJ/mol  
99+
28th Energy Level
597.60 kJ/mol  
99+
527.40 kJ/mol  
99+
29th Energy Level
597.60 kJ/mol  
99+
527.00 kJ/mol  
99+
30th Energy Level
597.60 kJ/mol  
99+
527.00 kJ/mol  
99+
Electrochemical Equivalent
1.48 g/amp-hr  
99+
1.75 g/amp-hr  
99+
Electron Work Function
3.63 eV  
99+
2.70 eV  
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
92  
26
59  
99+
Electron Configuration
[Rn] 5f3 6d1 7s2  
[Xe] 4f3 6s2  
Crystal Structure
Orthorhombic (ORTH)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100  
HCP-Crystal-Structure-of-Praseodymium.jpg#100  
Atom
  
  
Number of Protons
92  
26
59  
99+
Number of Neutrons
146  
14
82  
99+
Number of Electrons
92  
26
59  
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm  
31
182.00 pm  
13
Covalent Radius
196.00 pm  
14
203.00 pm  
9
Van der Waals Radius
186.00 pm  
40
239.00 pm  
18
Atomic Weight
238.03 amu  
21
140.91 amu  
99+
Atomic Volume
12.59 cm3/mol  
99+
20.80 cm3/mol  
25
Adjacent Atomic Numbers
  
  
Previous Element
Protactinium
  
Cerium
  
Next Element
Neptunium
  
Neodymium
  
Valence Electron Potential
170.00 (-eV)  
4
42.64 (-eV)  
99+
Lattice Constant
295.08 pm  
99+
367.25 pm  
32
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.02  
99+
1.61  
18
Mechanical
Density
  
  
Density At Room Temperature
19.10 g/cm3  
17
6.77 g/cm3  
99+
Density When Liquid (at m.p.)
17.30 g/cm3  
17
6.50 g/cm3  
99+
Tensile Strength
100.00 MPa  
28
55.00 MPa  
37
Viscosity
0.00  
21
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
27
Vapor Pressure at 2000 K
0.01 (Pa)  
20
13.20 (Pa)  
7
Elasticity properties
  
  
Shear Modulus
111.00 GPa  
10
14.80 GPa  
99+
Bulk Modulus
100.00 GPa  
16
28.80 GPa  
99+
Young's Modulus
208.00 GPa  
11
37.30 GPa  
99+
Poisson Ratio
0.23  
30
0.28  
16
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
18.80  
19
6.77  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
12
Susceptibility
0.00  
24
0.00  
19
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Conductor  
Resistivity
0.28 nΩ·m  
99+
0.70 nΩ·m  
99+
Electrical Conductivity
0.04 106/cm Ω  
99+
0.01 106/cm Ω  
99+
Electron Affinity
50.60 kJ/mol  
25
50.00 kJ/mol  
26
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.19 J/(kg K)  
33
Molar Heat Capacity
27.67 J/mol·K  
18
27.20 J/mol·K  
24
Thermal Conductivity
27.50 W/m·K  
99+
12.50 W/m·K  
99+
Critical Temperature
1,405.00 K  
99+
1,208.00 K  
99+
Thermal Expansion
13.90 µm/(m·K)  
30
6.70 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol  
18
296.80 kJ/mol  
99+
Enthalpy of Fusion
15.48 kJ/mol  
19
6.89 kJ/mol  
99+
Enthalpy of Atomization
489.50 kJ/mol  
18
368.00 kJ/mol  
33
Standard Molar Entropy
50.20 J/mol.K  
99+
73.20 J/mol.K  
10
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